Kennedy, Leslie W
McGraw-Hill Ryerson, 1983
Buku Teks
Abrahamson, Mark, author
Prentice-Hall, 1980
Buku Teks
Gans, Herbert J., author
The Free Press, 1982
Buku Teks
Bish, Robert L., author
McGraw-Hill Kogakusha, 1975
Buku Teks
edited by R.E. Pahl
Pergamon Press, 1968
Buku Teks